Connecting Revolution Pi modules

PiBridge is a backplane bus by which all the modules belonging to the Revolution Pi family can be connected.

The following add-ons can be connected to your RevPi Core using Pi Bridge:

up to 10 expansion modules (e.g. our I/O modules) or

up to 2 RevPi Gate modules.

PLEASE NOTE

RevPi Gate modules may only be positioned at the end of a chain, therefore to the far left or to the far right. It you place them in the middle of the chain, module recognition will not function properly and the system will not start up after being turned on but go into error status. The PiCtory configuration programme will also not allow such alignments.

Insert PiBridge, as shown, on the interconnect ports of the devices you would like to connect.

The data is transmitted by signal lines from one module via the Pi Bridge to the other module.

The various signal lines have the following tasks:

Pin

Abbreviation

Description

Function

Position recognition

These signal lines control the initial module and position recognition.RevPi Core thereby recognises on which side a module is connected.

A1

SNIFF1a

Left select

B1

SNIFF1b

Right select

A2

SNIFF2a

Left Side acknowledge

B2

SNIFF2b

Right Side acknowledge

Data volume

A3

GND

Common Ground

Volume data (common use with PIN B3).

B3

GND

Common Ground

Volume data (common use with PIN A3).

Ethernet channels

These signal lines manage RevPi Gate data traffic

A4

LRX-

Left recieve Data negative

Received data that is sent from the device on the left (data wire A).

B4

RTX-

Right transmit Data negative

Transmission data that is sent to the device on the right (data wire A).

A5

LRX+

Left recieve Data positive

Received data that is sent from the device on the left (data wire B).

B5

RTX+

Right transmit Data positive

Transmission data that is sent to the device on the right (data wire B).

A6

LTX-

Left transmit Data negative

Transmission data that is sent to the device on the left (data wire A).

B6

RRX-

Right recieve Data negative

Received data that is sent from the device on the right (data wire A).

A7

LTX+

Left transmit Data positive

Transmission data that is sent to the device on the left (data wire B).

B7

RRX+

Right recieve Data positive

Received data that is sent from the device on the right (data wire B).

Volume data

A8

GND

Common Ground

Volume data (common use with PIN B8).

B8

GND

Common Ground

Volume data (common use with PIN A8).

RS485 channels

These signal lines serve the exchange of status and configuration data and the I/O module data exchange.